I just wanted to show how laser safety is so important. I am bad for this myself as I was educated the old school way, safety is secondary. I have recently purchased a laser CNC. I have been following all safety procedures with its opperation. This morning I took pictures while running a program and realized how important safety glasses are. I couldn't imagine how much damage I would have done to my eyes in seconds without them. I posted photos of the laser with and without the safety filter glasses.
Without the filter:
With the filter:
And the ceiling reflection above the CNC:
This is a 5.5 watt laser. The temperature of the laser at full power is 842 degrees C.
Be safe everyone